Home / 65,420.48-90,292.08-38,561.44

Finding the Fourth Proportional to 65,420.48, 90,292.08 and 38,561.44

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Solution

The fourth proportional to 65,420.48, 90,292.08 and 38,561.44 is: 53,221.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,420.48 : 90,292.08 = 38,561.44 : x
  2. Step 2: Convert to fraction form
    65,420.48/90,292.08 = 38,561.44/x
  3. Step 3: Cross multiply
    65,420.48x = 90,292.08 × 38,561.44
  4. Step 4: Simplify right side
    65,420.48x = 3,481,792,625.40
  5. Step 5: Solve for x
    x = 3,481,792,625.40/65,420.48
  6. Step 6: Final answer
    x = 53,221.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.